<?php
/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2007 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    http://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * File Name: fckeditor_php5.php
 *         This is the integration file for PHP 5.
 *
 *         It defines the FCKeditor class that can be used to create editor
 *         instances in PHP pages on server side.
 *
 * File Authors:
 *                 Frederico Caldeira Knabben (www.fckeditor.net)
 */

class FCKeditor
{
        var $InstanceName ;
        var $BasePath ;
        var $Width ;
        var $Height ;
        var $ToolbarSet ;
        var $Value ;
        var $Config ;

        // PHP 5 Constructor (by Marcus Bointon <coolbru@users.sourceforge.net>)
        function __construct( $instanceName )
        {
                $this->InstanceName	= $instanceName ;
                $this->BasePath     = '/fckeditor/' ;
                $this->Width        = '100%' ;
                $this->Height       = '375' ;
                $this->ToolbarSet   = 'Default';
                $this->Value        = '' ;
                $this->Config       = array();
        }

        function Create()
        {	
                return $this->CreateHtml() ;
        }

        function CreateHtml()
        {
                $HtmlValue = htmlspecialchars( $this->Value ) ;
				
                $Html = '<div>' ;

                if ( $this->IsCompatible() )
                {
                        if ( isset( $_GET['fcksource'] ) && $_GET['fcksource'] == "true" )
                              $File = 'fckeditor.original.html' ;
                        else
                              $File = 'fckeditor.html' ;
						
                        $Link = "{$this->BasePath}editor/{$File}?InstanceName={$this->InstanceName}" ;

                        if ( $this->ToolbarSet != '' )
                                $Link .= "&amp;Toolbar={$this->ToolbarSet}" ;

                        // Render the linked hidden field.
                        $Html .= "<input type=\"hidden\" id=\"{$this->InstanceName}\" name=\"{$this->InstanceName}\" value=\"{$HtmlValue}\" style=\"display:none\" />" ;

                        // Render the configurations hidden field.
                        $Html .= "<input type=\"hidden\" id=\"{$this->InstanceName}___Config\" value=\"" . $this->GetConfigFieldString() . "\" style=\"display:none\" />" ;

                        // Render the editor IFRAME.
                        $Html .= "<iframe id=\"{$this->InstanceName}___Frame\" src=\"{$Link}\" width=\"{$this->Width}\" height=\"{$this->Height}\" frameborder=\"0\" scrolling=\"no\"></iframe>" ;
                }
                else
                {
                        if ( strpos( $this->Width, '%' ) === false )
                                $WidthCSS = $this->Width . 'px' ;
                        else
                                $WidthCSS = $this->Width ;

                        if ( strpos( $this->Height, '%' ) === false )
                                $HeightCSS = $this->Height . 'px' ;
                        else
                                $HeightCSS = $this->Height ;

                        $Html .= "<textarea name=\"{$this->InstanceName}\" rows=\"4\" cols=\"40\" style=\"width: {$WidthCSS}; height: {$HeightCSS}\">{$HtmlValue}</textarea>" ;
                }

                $Html .= '</div>' ;

                return $Html ;
        }

        function IsCompatible()
        {
                global $HTTP_USER_AGENT ;

                if ( isset( $HTTP_USER_AGENT ) )
                        $sAgent = $HTTP_USER_AGENT ;
                else
                        $sAgent = $_SERVER['HTTP_USER_AGENT'] ;

                if ( strpos($sAgent, 'MSIE') !== false && strpos($sAgent, 'mac') === false && strpos($sAgent, 'Opera') === false )
                {
                        $iVersion = (float)substr($sAgent, strpos($sAgent, 'MSIE') + 5, 3) ;
                        return ($iVersion >= 5.5) ;
                }
                else if ( strpos($sAgent, 'Gecko/') !== false )
                {
                        $iVersion = (int)substr($sAgent, strpos($sAgent, 'Gecko/') + 6, 8) ;
                        return ($iVersion >= 20030210) ;
                }
                else
                        return false ;
        }

        function GetConfigFieldString()
        {
                $sParams = '' ;
                $bFirst = true ;

                foreach ( $this->Config as $sKey => $sValue )
                {
                        if ( $bFirst == false )
                                $sParams .= '&amp;' ;
                        else
                                $bFirst = false ;

                        if ( $sValue === true )
                                $sParams .= $this->EncodeConfig( $sKey ) . '=true' ;
                        else if ( $sValue === false )
                                $sParams .= $this->EncodeConfig( $sKey ) . '=false' ;
                        else
                                $sParams .= $this->EncodeConfig( $sKey ) . '=' . $this->EncodeConfig( $sValue ) ;
                }

                return $sParams ;
        }

        function EncodeConfig( $valueToEncode )
        {
                $chars = array(
                        '&' => '%26',
                        '=' => '%3D',
                        '"' => '%22' ) ;

                return strtr( $valueToEncode,  $chars ) ;
        }
}

?>